MST to Riyadh Time Converter
UTC+3 is 10 hours ahead of MST. 9:00 AM MST = 7:00 PM UTC+3.
UTC+3 is 10 hours ahead of MST at the moment. To convert MST to Riyadh Time, add 10 hours to the MST time: 9:00 AM MST = 7:00 PM UTC+3.
MST (Mountain Time) is used in Denver, Salt Lake City, Albuquerque, Calgary, Edmonton; Phoenix (Arizona) all year. Riyadh Time (Riyadh time) is used in Riyadh, Saudi Arabia.
Most of Arizona uses MST all year and does not switch to MDT.
MST to Riyadh Time time conversion table
MST to Riyadh Time on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.
| MST | Riyadh Time | Day |
|---|---|---|
| 12:00 AM MST | 10:00 AM UTC+3 | — |
| 1:00 AM MST | 11:00 AM UTC+3 | — |
| 2:00 AM MST | 12:00 PM UTC+3 | — |
| 3:00 AM MST | 1:00 PM UTC+3 | — |
| 4:00 AM MST | 2:00 PM UTC+3 | — |
| 5:00 AM MST | 3:00 PM UTC+3 | — |
| 6:00 AM MST | 4:00 PM UTC+3 | — |
| 7:00 AM MST | 5:00 PM UTC+3 | — |
| 8:00 AM MST | 6:00 PM UTC+3 | — |
| 9:00 AM MST | 7:00 PM UTC+3 | — |
| 10:00 AM MST | 8:00 PM UTC+3 | — |
| 11:00 AM MST | 9:00 PM UTC+3 | — |
| 12:00 PM MST | 10:00 PM UTC+3 | night |
| 1:00 PM MST | 11:00 PM UTC+3 | night |
| 2:00 PM MST | 12:00 AM UTC+3 | next day |
| 3:00 PM MST | 1:00 AM UTC+3 | next day |
| 4:00 PM MST | 2:00 AM UTC+3 | next day |
| 5:00 PM MST | 3:00 AM UTC+3 | next day |
| 6:00 PM MST | 4:00 AM UTC+3 | next day |
| 7:00 PM MST | 5:00 AM UTC+3 | next day |
| 8:00 PM MST | 6:00 AM UTC+3 | next day |
| 9:00 PM MST | 7:00 AM UTC+3 | next day |
| 10:00 PM MST | 8:00 AM UTC+3 | next day |
| 11:00 PM MST | 9:00 AM UTC+3 | next day |
- Work rows — 9 AM–5 PM in both places
- Night in the destination (10 PM–6 AM)
How to convert MST to Riyadh Time
Add 10 hours to the MST time to get Riyadh Time.
Example: 9:00 AM MST = 7:00 PM UTC+3.
Across midnight: 10:00 PM MST = 8:00 AM UTC+3 (next day). The date changes, so always check the day as well as the hour.
Time difference between MST and Riyadh Time
The time difference between MST and Riyadh Time is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:
- 31 Dec 2025 – 7 Mar 2026: Riyadh Time is 10 hours ahead of MST.
- 8 Mar 2026 – 31 Oct 2026: Riyadh Time is 9 hours ahead of MST.
- 1 Nov 2026 – 30 Dec 2026: Riyadh Time is 10 hours ahead of MST.
MST and Riyadh Time during daylight saving time
- MST next changes on 14 Mar 2027: clocks go forward one hour at 01:59 local time, from MST (UTC−7) to MDT (UTC−6).
- Riyadh Time does not observe daylight saving time; it stays on UTC+3 all year.
Best time for a meeting between MST and Riyadh Time
MST and Riyadh Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM MST, which is 5:00 PM UTC+3.
MST to Riyadh Time FAQ
What is the time difference between MST and Riyadh Time?
Right now UTC+3 is 10 hours ahead of MST. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.
What is 9 AM MST in Riyadh Time?
9:00 AM MST is 7:00 PM UTC+3.
What is 12 PM (noon) MST in Riyadh Time?
12:00 PM MST is 10:00 PM UTC+3.
Is Riyadh Time ahead of or behind MST?
UTC+3 is 10 hours ahead of MST, so it is later in Riyadh Time than in MST.
Does MST change for daylight saving time?
Yes. MST next changes on 14 Mar 2027, when clocks go forward one hour from MST to MDT.
Does Riyadh Time change for daylight saving time?
No. Riyadh Time stays on the same offset all year, so conversions never shift for daylight saving time.
What is the best time for a meeting between MST and Riyadh Time?
MST and Riyadh Time have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM MST, which is 5:00 PM UTC+3.
Is MT the same as MST?
MST is the winter (standard) name of Mountain Time (MT). From March to November the same clocks are called MDT. This converter always uses the one in force on the date you choose.
Related conversions
Convert Riyadh Time to MST
Convert MST to other time zones
Convert other time zones to Riyadh Time
Learn more
Updated 7 November 2026. Time zone data: IANA tz database.